If you have had any damage to your antennas this winter due to wind, ice or a
combination, or if you are contemplating building a new antenna or putting up a
new commercial one, I will be glad to take the dimensions of a typical element
and use Yagi Stress Professional to see what it would take to make them a
little or perhaps a lot stronger. Absolutely no charge or obligation to
purchase anything. If you are starting with a new antenna, tell me what you
want it to survive in terms of wind speed and/or ice. If you are building an
antenna from scratch, it is pretty easy to make it so it will survive all but
the very worst of storms. The reduced stress of not worrying every time you
look at the weather channel and see a little ice storm coming your way is worth
a lot.
The only thing that will take a lot more time is if you have an existing design
and want to change the survivability significantly yet keep the resonance of
the elements the same as originally designed. That can be done also but will
probably require a different mounting plate and hardware and some work with
NEC-4.
Just send an e-mail directly to k5go@cycle-24.com with the element length of
each half element section (if it is a Yagi) along with the OD and wall
thickness (usually .058). I will assume the material is 6063-T832 unless
otherwise specified. If it is a vertical, give me the same dimensions for each
section.
In some cases you may only need a small piece of tubing to double wall a
section in order to make a significant difference in its ability to survive the
next storm.
73...Stan, K5GO
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|